Please solve and explain how. Photo attached

The solution is

Explanation:

The given expression is

We need to determine the solution of the expression.

Let us simplify the equation by taking LCM on both sides.

The LCM of is

Thus, we have,

Simplifying the terms, we get,

Subtracting the terms, we have,

Subtracting both sides of the expression by 6, we get,

Adding both sides of the expression by 14, we have,

Thus, the solution of the equation is

answer: what in the world is this

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,